The Linux kernel device tree requires a new node for the DMA Proxy driver. The node references the AXI DMA channels in the project. The following snippet illustrates the details of the new node including the use of the dma-coherent property to cause cached memory usage for the optional h/w coherent systems.
dma_proxy {
compatible ="xlnx,dma_proxy";
dmas = <&axi_dma_0 0 &axi_dma_0 1>;
dma-names = "dma_proxy_tx", "dma_proxy_rx";
dma-coherent;
} ;
More device tree examples are contained in the kernel driver source code in dma-proxy.c at https://github.com/Xilinx-Wiki-Projects/software-prototypes .